from lxml import etree
import urllib.request

url = 'https://www.baidu.com'

headers  = {
'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36'
}

request = urllib.request.Request(url=url,headers=headers)

response = urllib.request.urlopen(request)

content = response.read().decode('utf-8')

tree = etree.HTML(content)

result = tree.xpath('//span/input[@id="su"]/@value')[0]

print(result)

